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NCP5222

更新时间： 2024-11-26 05:52:03
品牌 Logo 应用领域
安森美 - ONSEMI 控制器
页数 文件大小 规格书
28页 3799K
描述
High Performance Dual-Channel / Two-Phase Synchronous Buck Controller for Notebook Power System

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NCP5222 数据手册

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NCP5222  
High Performance  
Dual-Channel / Two-Phase  
Synchronous Buck  
Controller for Notebook  
Power System  
http://onsemi.com  
MARKING  
The NCP5222, a fast−transient−response and high−efficiency  
dual−channel / two−phase buck controller with built−in gate drivers,  
provides multifunctional power solutions for notebook power system.  
180° interleaved operation between the two channels / phases has a  
capability of reducing cost of the common input capacitors and  
improving noise immunity. The interleaved operation also can reduce  
cost of the output capacitors with the two−phase configuration. Input  
supply voltage feedforward control is employed to deal with wide  
input voltage range. On−line programmable and automatic  
power−saving control ensures high efficiency over entire load range.  
Fast transient response reduces requirement on the output filters. In the  
dual−channel operation mode, the two output power rails are regulated  
individually. In the two−phase operation mode, the two output power  
rails are connected together by an external switch and current−sharing  
control is enabled to balance power delivery between phases.  
DIAGRAM  
1
N5222  
ALYWG  
G
QFN28  
CASE 485AR  
A
L
Y
W
G
= Assembly Location  
= Wafer Lot  
= Year  
= Work Week  
= Pb−Free Package  
(Note: Microdot may be in either location)  
Features  
PIN CONNECTIONS  
• Wide Input Voltage Range: 4.5 V to 27 V  
• Adjustable Output Voltage Range: 0.8 V to 3.3 V  
• Option for Dual−Channel and Two−Phase Modes  
• Fixed Nominal Switching Frequency: 300 kHz  
7
6
5
4
3
2
1
CS1−/  
CS2−/  
Vo2  
8
9
28  
Vo1  
• 180° Interleaved Operation Between the Two Channels in  
CS1+ 27  
CS2+  
Continue−Conduction−Mode (CCM)  
• Adaptive Power Control  
EN2/  
SKIP2  
EN1/  
10  
26  
25  
24  
23  
22  
NCP5222  
S KIP1  
AGND  
2 9  
• Input Supply Voltage Feedforward Control  
• Transient−Response−Enhancement (TRE) Control  
• Resistive or Inductor’s DCR Current Sensing  
• 0.8% Internal 0.8 V Reference  
11 BST2  
12  
BST1  
DH2  
13 SWN2  
DL2  
DH1  
SWN1  
DL1  
14  
• Internal 1 ms Soft−Start  
• Output Discharge Operation  
• Built−in Adaptive Gate Drivers  
15  
16  
17  
18  
19  
20  
21  
• Input Supplies Undervoltage Lockout (UVLO)  
• Output Overvoltage and Undervoltage Protections  
• Accurate Over Current Protection  
• Thermal Shutdown Protection  
(Top View)  
ORDERING INFORMATION  
†
Device  
NCP5222MNR2G  
Package  
Shipping  
• QFN−28 Package  
QFN28  
(Pb−Free)  
4000 /  
• This is a Pb−Free Device  
Tape & Reel  
Typical Applications  
†For information on tape and reel specifications,  
including part orientation and tape sizes, please  
refer to our Tape and Reel Packaging Specifications  
Brochure, BRD8011/D.  
• CPU Chipsets Power Supplies  
• Notebook Applications  
© Semiconductor Components Industries, LLC, 2010  
1
Publication Order Number:  
February, 2010 − Rev. 0  
NCP5222/D  
1234567...28

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